CN108611766A - A kind of spunbond tablet non-woven cloth slit drawing-off production method - Google Patents
A kind of spunbond tablet non-woven cloth slit drawing-off production method Download PDFInfo
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- CN108611766A CN108611766A CN201810564423.4A CN201810564423A CN108611766A CN 108611766 A CN108611766 A CN 108611766A CN 201810564423 A CN201810564423 A CN 201810564423A CN 108611766 A CN108611766 A CN 108611766A
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- slit
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- 239000004744 fabric Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 39
- 238000005098 hot rolling Methods 0.000 claims abstract description 21
- 238000004804 winding Methods 0.000 claims abstract description 21
- 238000002425 crystallisation Methods 0.000 claims abstract description 16
- 230000008025 crystallization Effects 0.000 claims abstract description 16
- 238000004513 sizing Methods 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 230000006855 networking Effects 0.000 claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 238000002074 melt spinning Methods 0.000 claims abstract description 6
- 238000001308 synthesis method Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 21
- 238000007664 blowing Methods 0.000 claims description 11
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 11
- 238000009987 spinning Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000007596 consolidation process Methods 0.000 claims description 10
- 229920004933 Terylene® Polymers 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 230000010349 pulsation Effects 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 claims 3
- 210000001367 artery Anatomy 0.000 claims 1
- 210000003462 vein Anatomy 0.000 claims 1
- 239000000835 fiber Substances 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 229920000728 polyester Polymers 0.000 description 12
- 238000010791 quenching Methods 0.000 description 4
- 230000000171 quenching effect Effects 0.000 description 4
- 239000002808 molecular sieve Substances 0.000 description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 3
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical compound [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/009—Condensation or reaction polymers
- D04H3/011—Polyesters
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/12—Stretch-spinning methods
- D01D5/14—Stretch-spinning methods with flowing liquid or gaseous stretching media, e.g. solution-blowing
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Artificial Filaments (AREA)
Abstract
A kind of spunbond tablet non-woven cloth slit drawing-off production method, it is characterised in that：The concrete operations of the present invention are as follows：Step 1, stock；Step 2, slices synthesis method；Step 3, crystallization and drying；Step 4, melt extruded；Step 5, melt filtration；Step 6, melt spinning；Step 7, to cold wind blower；Step 8, slit drawing-off；Step 9, sub-wire networking；Step 10, hot rolling (smooth roll)；Step 11, sizing；Step 12, cutting winding；Step 13, finished product.The band angle slit drawing-off capacity of the present invention is big, uniformity is good, cloth cover clouding is few, and fiber cross direction profiles amount is more, vertically and horizontally strength is than small, and low energy consumption for consumption.
Description
Technical field
The present invention relates to a kind of non-woven cloth slit drawing-off production method, especially terylene spun-bonded tablet non-woven cloth production
Line and slit drawing-off production method of the walk cloth direction with angle.
Background technology
Currently, in Nonwovens Field spun-bond process production method, there are two types of the spinning drawing techniques that generally use, i.e., narrow
Seam drawing-off and tubular drafting technique, two kinds of draft process routes cut both ways.
The advantages of tubular drafting is that drafting force is big, and fiber cross direction profiles amount is more, vertically and horizontally strength is than small, the disadvantage is that being also easy to produce
Clouding, uniformity are more difficult to control.Therefore, it is relatively large to be suitable for grammes per square metre for tubular drafting, and has higher want to vertically and horizontally strength
In asking, thicker product.The advantages of slit is that hole count is more, capacity is big, uniformity is good, cloth cover clouding is less, the disadvantage is that cloth cover
Laterally strength is low, poor to coarse denier fiber drawing-off effect, and product breadth is relatively narrow.Although slit product uniformity is preferable, due to fibre
It is few to tie up cross direction profiles amount, leading to cloth cover, laterally strength is low, and vertically and horizontally strength is than big.Therefore, under normal circumstances, slit drawing-off is more
It is suitable for the thin product that grammes per square metre is relatively low, monofilament is relatively thin, uniformity requirement is higher, lateral strength is of less demanding.Comprehensive analysis two
The Positive and Negative Aspects of kind drafting method, can researching and developing one kind, i.e. capacity be big, uniformity is good, cloth cover clouding is few, and can spin out fiber cross
It is more to abundance, vertically and horizontally strength than small product, be exactly the key point of patent of the present invention.
Invention content
The present invention provide it is a kind of can reduce energy consumption, improve production efficiency, ensure product quality spunbond tablet it is non-woven
Cloth slit drawing-off production method, this method have the advantages that tubular drafting device fiber cross direction profiles amount is more, vertically and horizontally strength is than small, together
When but also with the advantage that hole count is more, capacity is big, uniformity is good, cloth cover clouding is less.
The present invention is as follows：
Step 1, stock：With terylene (PET) for raw material；
Step 2, slices synthesis method：Terylene spun-bonded non-woven cloth is produced by spun-bond process, i.e., is quantitatively conveyed through rotary feeder
Into pulsed-bed pre-crystallizer；
Step 3, crystallization and drying：It is in pulsation fluidized state that slice is blown lower in hot-air, prevents from bonding, pre-crystallization temperature
160 DEG C~170 DEG C, crystallization time 20min, the lower slice of crystallinity increases crystallinity, so that the softening temperature of slice is increased, cuts
Piece moisture content 20ppm~25ppm, inherent viscosity drop≤0.01dl/g of dry chip avoid occurring to be sliced in the drying process viscous
Even, the powder generated in pre-crystallized process is detached by cyclone separator, and PET slices enter drying tower, dry compression used
Air enters PET drying towers, 155 DEG C~165 DEG C of drying temperature, when dry after mole sieve drier removes moisture through heater
Between 6h, since the steam partial pressure of slice surface is much larger than the steam partial pressure of dry air, moisture moves from slice into dry air
It moves, is finally reached required aqueous index；
Step 4, melt extruded：Slice enters screw extruder, the setting of screw extruder temperature by dead weight or second-pumping
It is 288 DEG C~294 DEG C, is heated after feeding section of the screw extruder with chuck water cooling, then through five heating zones, it is gradually molten
Change, melting, compression exhaust, metering and homogenizing monitor melt pressure through measurement head, and in constant flow rate slave head melt pipe
It squeezes out；
Step 5, melt filtration：It is filtered through fondant filter by the melt of head extrusion, 25 μ of filtering accuracy；
Step 6, melt spinning：After melt pipe enter spinning die head in metering pump, die pressure 9MPa~
Then 10MPa, 295 DEG C~305 DEG C of die head temperature spray melt stream through filament spinning component；
Step 7, to cold wind blower：Into oppositely-blowing cooling forming device, melt stream in cooling device through pair
Quenching, at this time melt stream be frozen into long filament, to dry wind speed 0.7m/s~1.0m/s；To temperature 15 DEG C~20 of drying
DEG C, to humidity 65% of drying；
Step 8, slit drawing-off：It is in 10 °~20 ° of extension apparatus that tow after cooling, which is imported into production line, and in drawing-off
There is a drawing-off slit in device centre, slit width 3mm~6mm, both sides blowing out pressurised air, and drawing-off wind pressure 0.3Mpa~
0.35Mpa, draft speed 4950m/min~5100m/min；
Step 9, sub-wire networking：Pneumatically flowage friction is by after high speed drawing-off in drawing-off slit for tow, through sub-wire
It falls on the lace curtaining of lower part, the silk after drawing-off is accumulated in piddler networking on lace curtaining by the attraction of wind turbine, at net spee 20m/
Min~140m/min；
Step 10, hot rolling (smooth roll)：It is sent to hot-rolling mill, 250 DEG C~265 DEG C of hot rolling (smooth roll) temperature, line pressure 75N/mm
~125N/mm, hot rolling speed 20m/min~140m/min；
Step 11, sizing：Hot rolled machine consolidation enters back into forming machine, sizing speed 20m/min~140m/min, sizing temperature
252 DEG C~265 DEG C of degree；
Step 12, cutting winding：After hot rolled machine consolidation, into winder winding around winding speed 20m/min~140m/
min；
Step 13, finished product：It is automatic to cut simultaneously change of lap, product grammes per square metre when winding is up to technique initialization length：10g/m2~
150g/m2, product breadth 1600mm~4500mm；Filament number 1.0dpf~3.0dpf.
The present invention has the following advantages that compared with prior art：
1 while the fibre that slit drawing-off capacity is big, uniformity is good, cloth cover clouding is few and tubular drafting has is concentrated
Tie up cross direction profiles amount it is more, vertically and horizontally strongly than small advantage；
2, device structure is simple, yield is big, low energy consumption.
Description of the drawings
Fig. 1 is the process flow diagram of the present invention.
Specific implementation mode
Embodiment 1：
The concrete operations of the present invention are as follows：
Step 1, stock：With polyester (PET) slice for raw material；
Step 2, slices synthesis method：Terylene spun-bonded non-woven cloth is produced by spun-bond process, i.e., is quantitatively conveyed through rotary feeder
Into pulsed-bed pre-crystallizer；
Step 3, crystallization and drying：It is in pulsation fluidized state that slice is blown lower in hot-air, prevents from bonding, pre-crystallization temperature
160 DEG C, crystallization time 20min, the lower slice of crystallinity increases crystallinity, and the softening temperature of slice is made to increase, and slice is aqueous
0.006dl/g drops in the inherent viscosity of rate 25ppm, dry chip, avoids occurring to be sliced adhesion in the drying process, in pre-crystallized process
The powder of middle generation, is detached by cyclone separator, and PET slices enter drying tower, and dry compressed air used is dry through molecular sieve
Enter PET drying towers, 155 DEG C, drying time 6h of drying temperature, due to the water of slice surface through heater after dry device removing moisture
Vapor partial pressure is much larger than the steam partial pressure of dry air, and moisture is migrated from slice into dry air, is finally reached required contain
Water index；
Step 4, melt extruded：Slice enters screw extruder, the setting of screw extruder temperature by dead weight or second-pumping
It is 288 DEG C, is heated after feeding section of the screw extruder with chuck water cooling, then through five heating zones, gradually melt, melt,
Compression exhaust, metering and homogenizing monitor melt pressure through measurement head, and to be squeezed out in constant flow rate slave head melt pipe；
Step 5, melt filtration：It is filtered through fondant filter by the melt of head extrusion, 25 μ of filtering accuracy；
Step 6, melt spinning：Enter the metering pump in spinning die head, die pressure 9MPa, die head temperature after melt pipe
Then 295 DEG C of degree sprays melt stream through filament spinning component；
Step 7, to cold wind blower：Into oppositely-blowing cooling forming device, melt stream in cooling device through pair
Quenching, at this time melt stream be frozen into long filament, to dry wind speed 0.7m/s；To 20 DEG C of temperature of drying, to humidity of drying
65%；
Step 8, slit drawing-off：It is in 20 ° of extension apparatus that tow after cooling, which is imported into production line, and at extension apparatus center
There are a drawing-off slit, slit width 3mm, both sides blowing out pressurised air, drawing-off wind pressure 0.3Mpa, draft speed 5100m/ in position
min；
Step 9, sub-wire networking：Pneumatically flowage friction is by after high speed drawing-off in drawing-off slit for tow, through sub-wire
It falls on the lace curtaining of lower part, the silk after drawing-off is accumulated in piddler networking on lace curtaining by the attraction of wind turbine, at net spee 138m/
min；
Step 10, hot rolling (smooth roll)：It is sent to hot-rolling mill, 250 DEG C, line pressure 75N/mm of hot rolling (smooth roll) temperature, hot rolling speed
Spend 135.3m/min；
Step 11, sizing：Hot rolled machine consolidation enters back into forming machine, sizing speed 134m/min, 252 DEG C of setting temperature；
Step 12, cutting winding：After hot rolled machine consolidation, into winder winding around winding speed 134m/min；
Step 13, finished product：It is automatic to cut simultaneously change of lap, product grammes per square metre 10g/m when winding is up to technique initialization length2, product
Breadth 1600mm, filament number 1.0dpf.
Embodiment 2：
The concrete operations of the present invention are as follows：
Step 1, stock：With polyester (PET) slice for raw material；
Step 2, slices synthesis method：Terylene spun-bonded non-woven cloth is produced by spun-bond process, i.e., is quantitatively conveyed through rotary feeder
Into pulsed-bed pre-crystallizer；
Step 3, crystallization and drying：It is in pulsation fluidized state that slice is blown lower in hot-air, prevents from bonding, pre-crystallization temperature
165 DEG C, crystallization time 20min, the lower slice of crystallinity increases crystallinity, and the softening temperature of slice is made to increase, and slice is aqueous
0.008dl/g drops in the inherent viscosity of rate 24ppm, dry chip, avoids occurring to be sliced adhesion in the drying process, in pre-crystallized process
The powder of middle generation, is detached by cyclone separator, and PET slices enter drying tower, and dry compressed air used is dry through molecular sieve
Enter PET drying towers, 160 DEG C, drying time 6h of drying temperature, due to the water of slice surface through heater after dry device removing moisture
Vapor partial pressure is much larger than the steam partial pressure of dry air, and moisture is migrated from slice into dry air, is finally reached required contain
Water index；
Step 4, melt extruded：Slice enters screw extruder, the setting of screw extruder temperature by dead weight or second-pumping
It is 290 DEG C, is heated after feeding section of the screw extruder with chuck water cooling, then through five heating zones, gradually melt, melt,
Compression exhaust, metering and homogenizing monitor melt pressure through measurement head, and to be squeezed out in constant flow rate slave head melt pipe；
Step 5, melt filtration：It is filtered through fondant filter by the melt of head extrusion, 25 μ of filtering accuracy；
Step 6, melt spinning：Enter the metering pump in spinning die head, die pressure after melt pipe：9.5MPa, mould
300 DEG C of temperature of head, then sprays melt stream through filament spinning component；
Step 7, to cold wind blower：Into oppositely-blowing cooling forming device, melt stream in cooling device through pair
Quenching, at this time melt stream be frozen into long filament, to dry wind speed 0.8m/s；To 18 DEG C of temperature of drying, to humidity of drying
65%；
Step 8, slit drawing-off：It is in 15 ° of extension apparatus that tow after cooling, which is imported into production line, and at extension apparatus center
There are a drawing-off slit, slit width 4mm, both sides blowing out pressurised air, drawing-off wind pressure 0.32Mpa, draft speed in position
5000m/min；
Step 9, sub-wire networking：Pneumatically flowage friction is by after high speed drawing-off in drawing-off slit for tow, through sub-wire
It falls on the lace curtaining of lower part, the silk after drawing-off is accumulated in piddler networking on lace curtaining by the attraction of wind turbine, at net spee 40m/
min；
Step 10, hot rolling (smooth roll)：It is sent to hot-rolling mill, 260 DEG C, line pressure 100N/mm of hot rolling (smooth roll) temperature, hot rolling speed
Spend 39.5m/min；
Step 11, sizing：Hot rolled machine consolidation enters back into forming machine, sizing speed 39m/min, 258 DEG C of setting temperature；
Step 12, cutting winding：After hot rolled machine consolidation, into winder winding around winding speed 39m/min；
Step 13, finished product：It is automatic to cut simultaneously change of lap, product grammes per square metre 80g/m when winding is up to technique initialization length2, product
Breadth 3200mm；Filament number 2.0dpf.
Embodiment 3：
The concrete operations of the present invention are as follows：
Step 1, stock：With polyester (PET) slice for raw material；
Step 2, slices synthesis method：Terylene spun-bonded non-woven cloth is produced by spun-bond process, i.e., is quantitatively conveyed through rotary feeder
Into pulsed-bed pre-crystallizer；
Step 3, crystallization and drying：It is in pulsation fluidized state that slice is blown lower in hot-air, prevents from bonding, pre-crystallization temperature
168 DEG C, crystallization time 20min, the lower slice of crystallinity increases crystallinity, and the softening temperature of slice is made to increase, and slice is aqueous
0.007dl/g drops in the inherent viscosity of rate 22ppm, dry chip, avoids occurring to be sliced adhesion in the drying process, in pre-crystallized process
The powder of middle generation, is detached by cyclone separator, and PET slices enter drying tower, and dry compressed air used is dry through molecular sieve
Enter PET drying towers, 165 DEG C, drying time 6h of drying temperature, due to the water of slice surface through heater after dry device removing moisture
Vapor partial pressure is much larger than the steam partial pressure of dry air, and moisture is migrated from slice into dry air, is finally reached required contain
Water index；
Step 4, melt extruded：Slice enters screw extruder, the setting of screw extruder temperature by dead weight or second-pumping
It is 294 DEG C, is heated after feeding section of the screw extruder with chuck water cooling, then through five heating zones, gradually melt, melt,
Compression exhaust, metering and homogenizing monitor melt pressure through measurement head, and to be squeezed out in constant flow rate slave head melt pipe；
Step 5, melt filtration：It is filtered through fondant filter by the melt of head extrusion, 25 μ of filtering accuracy；
Step 6, melt spinning：Enter the metering pump in spinning die head, die pressure 10MPa, die head after melt pipe
Then 305 DEG C of temperature sprays melt stream through filament spinning component；
Step 7, to cold wind blower：Into oppositely-blowing cooling forming device, melt stream in cooling device through pair
Quenching, at this time melt stream be frozen into long filament, to dry wind speed 1.0m/s；To 15 DEG C of temperature of drying, to humidity of drying
65%；
Step 8, slit drawing-off：It is in 10 ° of extension apparatus that tow after cooling, which is imported into production line, and at extension apparatus center
There are a drawing-off slit, slit width 6mm, both sides blowing out pressurised air, drawing-off wind pressure 0.35Mpa, draft speed in position
4950m/min；
Step 9, sub-wire networking：Pneumatically flowage friction is by after high speed drawing-off in drawing-off slit for tow, through sub-wire
It falls on the lace curtaining of lower part, the silk after drawing-off is accumulated in piddler networking on lace curtaining by the attraction of wind turbine, at net spee 25m/
min；
Step 10, hot rolling (smooth roll)：It is sent to hot-rolling mill, 265 DEG C of hot rolling (smooth roll) temperature, line pressure:110N/mm, hot rolling
Speed 24.8m/min；
Step 11, sizing：Hot rolled machine consolidation enters back into forming machine, sizing speed 24.5m/min, 265 DEG C of setting temperature；
Step 12, cutting winding：After hot rolled machine consolidation, into winder winding around winding speed 24.5m/min；
Step 13, finished product：It is automatic to cut simultaneously change of lap, product grammes per square metre when winding is up to technique initialization length：150g/m2, production
Product breadth 4500mm；Filament number 3.0dpf.
Claims (1)
1. a kind of spunbond tablet non-woven cloth slit drawing-off production method, it is characterised in that：The concrete operations of the present invention are as follows：
Step 1, stock：With terylene (PET) for raw material；
Step 2, slices synthesis method：Terylene spun-bonded non-woven cloth is produced by spun-bond process, i.e., is quantitatively transported to arteries and veins through rotary feeder
In dynamic bed pre-crystallizer；
Step 3, crystallization and drying：It is in pulsation fluidized state that slice is blown lower in hot-air, prevents from bonding, pre-crystallization temperature 160
DEG C~170 DEG C, crystallization time 20min, the lower slice of crystallinity increases crystallinity, and the softening temperature of slice is made to increase, and is sliced
Moisture content 20ppm~25ppm, inherent viscosity drop≤0.01dl/g of dry chip avoid occurring to be sliced adhesion in the drying process,
The powder generated in pre-crystallized process, is detached by cyclone separator, and PET slices enter drying tower, and dry compression used is empty
Gas enters PET drying towers, 155 DEG C~165 DEG C of drying temperature, drying time after mole sieve drier removes moisture through heater
6h, since the steam partial pressure of slice surface is much larger than the steam partial pressure of dry air, moisture is migrated from slice into dry air,
It is finally reached required aqueous index；
Step 4, melt extruded：Slice enters screw extruder by dead weight or second-pumping, and screw extruder temperature is set as 288
DEG C~294 DEG C, it is heated after feeding section of the screw extruder with chuck water cooling, then through five heating zones, gradually melts, is molten
Melt, compression exhaust, metering and homogenizing, monitor melt pressure through measurement head, and to be squeezed out in constant flow rate slave head melt pipe；
Step 5, melt filtration：It is filtered through fondant filter by the melt of head extrusion, 25 μ of filtering accuracy；
Step 6, melt spinning：Enter the metering pump in spinning die head, die pressure 9MPa~10MPa, mould after melt pipe
295 DEG C~305 DEG C of temperature of head, then sprays melt stream through filament spinning component；
Step 7, to cold wind blower：Into oppositely-blowing cooling forming device, melt stream is in cooling device through to blowing
Cooling, melt stream is frozen into long filament at this time, to the wind speed 0.7m/s~1.0m/s that dries；To dry 15 DEG C~20 DEG C of temperature,
To humidity 65% of drying；
Step 8, slit drawing-off：It is in 10 °~20 ° of extension apparatus that tow after cooling, which is imported into production line, and in extension apparatus
There is a drawing-off slit in center portion position, slit width 3mm~6mm, both sides blowing out pressurised air, and drawing-off wind pressure 0.3Mpa~
0.35Mpa, draft speed 4950m/min~5100m/min；
Step 9, sub-wire networking：Tow pneumatically flowage friction in drawing-off slit is fallen on by after high speed drawing-off through sub-wire
On the lace curtaining of lower part, the silk after drawing-off is accumulated in piddler networking on lace curtaining by the attraction of wind turbine, at net spee:20m/min
~140m/min；
Step 10, hot rolling (smooth roll)：It is sent to hot-rolling mill, 250 DEG C~265 DEG C of hot rolling (smooth roll) temperature, line pressure 75N/mm~
125N/mm, hot rolling speed 20m/min~140m/min；
Step 11, sizing：Hot rolled machine consolidation enters back into forming machine, sizing speed 20m/min~140m/min, setting temperature
252 DEG C~265 DEG C；
Step 12, cutting winding：After hot rolled machine consolidation, into winder winding around winding speed 20m/min~140m/min；
Step 13, finished product：It is automatic to cut simultaneously change of lap, product grammes per square metre 10g/m when winding is up to technique initialization length2~150g/m2,
Product breadth 1600mm~4500mm；Filament number 1.0dpf~3.0dpf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810564423.4A CN108611766A (en) | 2018-06-04 | 2018-06-04 | A kind of spunbond tablet non-woven cloth slit drawing-off production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810564423.4A CN108611766A (en) | 2018-06-04 | 2018-06-04 | A kind of spunbond tablet non-woven cloth slit drawing-off production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108611766A true CN108611766A (en) | 2018-10-02 |
Family
ID=63664746
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810564423.4A Pending CN108611766A (en) | 2018-06-04 | 2018-06-04 | A kind of spunbond tablet non-woven cloth slit drawing-off production method |
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| Country | Link |
|---|---|
| CN (1) | CN108611766A (en) |
Cited By (1)
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